Oxygen Sensor: Service and Repair

REMOVAL
Upstream 1/1, 1/2
1. Raise and support vehicle.

Fig. 20 Upstream Heated Oxygen Sensor:

2. Disconnect heated oxygen sensor electrical connector.
3. Remove sensor using an oxygen sensor crow foot wrench such as Snap-On tool YA8875 or equivalent

Downstream 2/1, 2/2
1. Raise and support vehicle.

Fig. 21 Right Rear Heated Oxygen Sensor:

Fig. 22 Left Rear Heated Oxygen Sensor:

2. Disconnect heated oxygen sensor electrical connector or.
3. Remove sensor using an oxygen sensor crow foot wrench such as Snap-On tool YA8875 or equivalent

INSTALLATION
Upstream 1/1, 1/2
1. After removing the sensor, the exhaust manifold threads must be cleaned with an 18 mm X 1.5 + 6E tap. If reusing the original sensor, coat the sensor threads with an anti-seize compound such as Loctite 771 - 64 or equivalent. New sensors have compound on the threads and do not require an additional coating.
2. Install sensor using an oxygen sensor crow foot wrench such as Snap-On tool YA8875 or equivalent
3. Tighten the sensor to 27 Nm (20 ft. lbs.) torque.
4. Plug sensor connector.
5. Lower vehicle.

Downstream 2/1, 2/2
1. After removing the sensor, the threads must be cleaned with an 18 mm X 1.5 + 6E tap. If reusing the original sensor, coat the sensor threads with an anti-seize compound such as Loctite 771 - 64 or equivalent. New sensors have compound on the threads and do not require an additional coating.
2. Install sensor using an oxygen sensor crow foot wrench such as Snap-On tool YA8875 or equivalent
3. Tighten the sensor to 27 Nm (20 ft. lbs.) torque.
4. Plug sensor connector.
5. Lower vehicle.